It's pretty obvious that beastcoins and beastmen seals are two different items. If the recipe calls for beastcoins, you use beastcoins, not seals. The items have two different names, therefore they are two different items with two different uses.

Beastcoins are a VERY rare drop from windurstian goblins (only got it once) Silver beastcoins drop occasinally (uncommon but not super-rare) from yagudo in tahrongi canyon. Beastmen seals drop like raindrops. I never really bothered with them, my inventory being crowded as it is.

Beastcoins come in different types from the plain copper ones just called beastcoins to silver gold and mythril types. They all drop from various mobs around the towns the stronger the mob the better type of coin you find. In and around Bastok the goblins and quads very rarely drop the standard beastcoins, in and around Windhurst the Yagudo, which are bird men, drop the silver types. These coins are used in various crafting recipes. Check the guild recipe pages to see what specifically.
Also on a side note I was told by a high level english speaking japanese player that beast seals which are totally different are used later on in some quest where the more you have the better rare items you can get. In the guide book I have some guy in another town ask you for them, but you have to be able to ride a Chocobo in order to get the quest.
Hope this info helps all of you out.

Yeah, I think that guy is talking about the Coins, and not seals, as it says in the desc of them, widely used by the Yagudo, and you can find them all just outside of Windhurst, I have so many of them, dunno what to do with em, until now.

If you start near Bastok, they can be STOLEN off of any of the lizardmen, amber and what not.

I've had about 3 of the coins drop. They seems to be from random mobs. One dropped from a goblin fisher, a forest hair and the last was an orcish fodder. The seals seem to be random as well and more frequent. Some one said they are used for a quest in Jeuno, but I am only lv 10 and have not been able to comfirm that. I have seen about 4 coins stolen from mobs, so that might be an easier way to get them. Again they seemed random including mobs like wild sheep and mouse bats.

There is an item called 'Beast Coin' I can buy them from the AH. That's what I used to make bronze ingots. I just wish I knew how to get these besides the AH, like what they drop off or whatever.

You all are getting the coins and NOT the seals right? I have tons of seals but have never seen a coin drop from anything yet.

I've only been able to find them at the AH

ps, they aren't the same thing, I can't synth bronze ingots with seals, I have to use coins

i got mine from a goblin in east ron. fire crystals also drop from goblins so they're good to hunt if you want to do smithing.

I doubt if you have 60 "coins", you probably have "seals" or are those the same thing?

I got one from a Goblin.

I stole from it, though. I don't know if it's steal only or not..